Magnetic chuck adapter



March 28, 1950 J, WITBROD 2,501,803

MAGNETIC CHUCK ADAPTER Filed Jan. 25, 1948 fi/ J2? seed/ @0009 Q 000 0000009 090 OGQQGGGNM IN VEN TOR.

A'ITD RN EYS Patented Mar. 28, 1950 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a device for holding various size pieces of ferrous material on a magnetic chuck.

It is an object of the present invention to provide a device for holding large or small pieces of ferrous material on a magnetic chuck which is so designed that it can be engaged with the chuck on any one or all of its engaging faces and not limited in its use to the location of the device on but certain of its faces.

Another object of the present invention is to hold a large or small piece of ferrous material, such as a punch holder to a die set or a screw to a magnetic chuck and when two or more surfaces are involved with the chuck, two parallels are used, and when so used, the parallels will retain in place a weight up to and including thirty pounds.

Other objects of the present invention are to provide a device for retaining large or small pieces of ferrous material on a magnetic chuck which is of simple construction, easy to handle, inexpensive to manufacture, and eiiicient in operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a plan view looking upon one of the faces of the device; 1

Figure 2 is a plan view looking upon anoth face of the device;

Figure 3 is a sectional view of the device, taken on line 33 of Figure 2;

Figure 4 is a sectional view of the device, taken on line 4--4 of Figure 1;

Figure 5 is a sectional view of the device, taken on line 5-5 of Figure 3;

Figure 6 is a perspective of a magnetic chuck with the device resting upon the same and in position to receive various size pieces of ferrous material.

Referring now to the figures, [0 represents a block of non-ferrous material such as plastic, aluminum or similar materials in which there has been drilled a plurality of holes I I from three of the sides of the block. In one direction, as viewed in Figure 3, there are extended, five parallel holes in vertically spaced relationship, and three groups of the same as shown in Figure 2. In another direction, as seen in Figure 4, the holes are of less length and are in groups of four. The four groups are shown in Figure 1. In another or third direction, there are extended several pairs or groups of two, as viewed in Figure 5. Of course the number of holes can be varied, depending upon the size of the block, and the type of work to which the block is to be put.

Into the long holes, there are extended long pins of ferrous material as indicated at i2. In the holes of less length, there are placed dowell pins 13, also of ferrous material. In the pairs of holes, as shown in Figure 5, there are extended, pins 14.

In Figure 6, there is shown a magnetic chuck [6, having pole faces II, to which the device ID of the present invention is attracted. The pole faces I! are separated from one another at a greater distance from which the pole faces of the pins Within the device are separated. Accordingly, small pieces of ferrous metal can be applied to the device and the small ferrous piece can be retained on the device On the large chuck 16 in a manner so that it can be worked upon.

While various changes may be made in the detailed construction, it shall be understood that such changes shall be within the spirit and scope of the present invention, as defined by the appended claims.

I claim:

1. A device for holding small pieces of ferrous material upon a magnetic chuck, comprising a rectangular-shaped block of non-ferrous material having six sides, holes arranged in the material and extending respectively from three of its sides to their respective corresponding three opposite sides and pins of ferrous material extending respectively through the holes from one side to the other and the ends of each pin flush with the outside of the block.

2. A device for holding small pieces of ferrous material upon a magnetic chuck, comprising a rectangular-shaped block of non-ferrous material having six sides, holes arranged in the material and extending respectively from two of its sides to their opposite corresponding two opposite sides and pins of ferrous material extending respectively through the holes from one side to the other and the ends of said pins flush with the outside of the block. FRED JOHN WITBROD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,895,129 Jones Jan. 24, 1933 2,104,472 St. Clair et al. Jan. 4, 1938 2,401,887 Sheppard June 11, 1946 FOREIGN PATENTS Number Country Date 113,568 Great Britain Feb. 28, 1918 

